Scientific Highlights: Research Division "Photon Science"

Magnetic beauty within

Magnetic vortices come full circle

The first experimental observation of three-dimensional magnetic ‘vortex rings’ provides fundamental insight into intricate nanoscale structures inside bulk magnets, and offers fresh perspectives for magnetic devices.

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Ruzicka Prize

The Ružička ​Prize 2020 goes to Dr. Patrick Hemberger (PSI) for his research on understanding the mechanisms of catalytic fast pyrolysis by unveiling reactive intermediates in heterogeneous catalysts.

High-resolution X-ray microscopy of a test pattern with 9 nm line width

World Record: 7 nm Resolution in Scanning Soft X-ray Microscopy

During the past decade, scientists have put high effort to achieve sub-10 nm resolution in X-ray microscopy. Recent developments in high-resolution lithography-based diffractive optics, combined with the extreme stability and precision of the PolLux and HERMES scanning X-ray microscopes, resulted now in a so far unreached resolution of seven nanometers in scanning soft X-ray microscopy. Utilizing this highly precise microscopy technique with the X-ray magnetic circular dichroism effect, dimensionality effects in an ensemble of interacting magnetic nanoparticles can be revealed.

Mirjam van Daalen

BEATS Project

Mirjam van Daalen, chair of the BEATS Steering Committee

COVID-19 - travel assistance websites launched

The Bio Nano spinout of Prof. Aeppli has launched new travel assistance websites that provide continually updated information on restrictions such as multi-​day quarantines imposed on travel between countries, together with the latest pandemic predictions so that travellers can make informed decisions.

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Harnessing components from the optical internet for programmable spectroscopy

A novel concept for extracting information from spectra where traditional post-processing procedures fail, dubbed ‘software-defined spectroscopy’, offers a fresh approach to high-resolution terahertz spectroscopy. The new method implements an ‘optical comb’ and combines it with a programmable modulator, all using components from the optical internet.

Two-color, twin-focus zone plate

Two-color snapshots of ultrafast charge and spin dynamics

In a joint research effort, an international team of scientists lead by Emmanuelle Jal (Sorbonne Université) performed a time-resolved experiment at the FERMI free-electron laser to disclose the dynamic behavior of two magnetic element of a compount material in only one snapshot. The X-ray Optics and Applications group developed a dedicated optical element for this experiment that is usable with two different photon energies (colors) simultaneously.

PSI - member of the Microsoft Quantum Network

The PSD is a research partner in the Microsoft Quantum Network, which is a broad community of individuals and organizations collaborating with Microsoft to advance a comprehensive quantum ecosystem, develop practical solutions, and build a robust quantum workforce.

The institutions of scientific excellence are partnering collaboratively with Microsoft to pursue the advancement of quantum computing research, development, and education. The large scale facilities at PSI, in particular the Swiss Light Source, offers unique characterizations techniques to shed light on the secrets of functional materials.